]>
Commit | Line | Data |
---|---|---|
92f5a8d4 TL |
1 | /* |
2 | Copyright 2019 Glen Joseph Fernandes | |
3 | (glenjofe@gmail.com) | |
4 | ||
5 | Distributed under the Boost Software License, Version 1.0. | |
6 | (http://www.boost.org/LICENSE_1_0.txt) | |
7 | */ | |
8 | #ifndef BOOST_CORE_ALLOC_CONSTRUCT_HPP | |
9 | #define BOOST_CORE_ALLOC_CONSTRUCT_HPP | |
10 | ||
11 | #include <boost/core/noinit_adaptor.hpp> | |
12 | ||
13 | namespace boost { | |
14 | ||
92f5a8d4 TL |
15 | template<class A, class T> |
16 | inline void | |
17 | alloc_destroy(A& a, T* p) | |
18 | { | |
20effc67 | 19 | boost::allocator_destroy(a, p); |
92f5a8d4 TL |
20 | } |
21 | ||
22 | template<class A, class T> | |
23 | inline void | |
24 | alloc_destroy_n(A& a, T* p, std::size_t n) | |
25 | { | |
26 | while (n > 0) { | |
20effc67 | 27 | boost::allocator_destroy(a, p + --n); |
92f5a8d4 TL |
28 | } |
29 | } | |
20effc67 | 30 | |
92f5a8d4 TL |
31 | template<class A, class T> |
32 | inline void | |
20effc67 | 33 | alloc_destroy(noinit_adaptor<A>&, T* p) |
92f5a8d4 TL |
34 | { |
35 | p->~T(); | |
36 | } | |
37 | ||
38 | template<class A, class T> | |
39 | inline void | |
20effc67 | 40 | alloc_destroy_n(noinit_adaptor<A>&, T* p, std::size_t n) |
92f5a8d4 TL |
41 | { |
42 | while (n > 0) { | |
43 | p[--n].~T(); | |
44 | } | |
45 | } | |
92f5a8d4 TL |
46 | |
47 | namespace detail { | |
48 | ||
49 | template<class A, class T> | |
50 | class alloc_destroyer { | |
51 | public: | |
52 | alloc_destroyer(A& a, T* p) BOOST_NOEXCEPT | |
53 | : a_(a), | |
54 | p_(p), | |
55 | n_(0) { } | |
56 | ||
57 | ~alloc_destroyer() { | |
58 | boost::alloc_destroy_n(a_, p_, n_); | |
59 | } | |
60 | ||
61 | std::size_t& size() BOOST_NOEXCEPT { | |
62 | return n_; | |
63 | } | |
64 | ||
65 | private: | |
66 | alloc_destroyer(const alloc_destroyer&); | |
67 | alloc_destroyer& operator=(const alloc_destroyer&); | |
68 | ||
69 | A& a_; | |
70 | T* p_; | |
71 | std::size_t n_; | |
72 | }; | |
73 | ||
74 | } /* detail */ | |
75 | ||
92f5a8d4 TL |
76 | template<class A, class T> |
77 | inline void | |
78 | alloc_construct(A& a, T* p) | |
79 | { | |
20effc67 | 80 | boost::allocator_construct(a, p); |
92f5a8d4 TL |
81 | } |
82 | ||
83 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
84 | #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) | |
85 | template<class A, class T, class U, class... V> | |
86 | inline void | |
87 | alloc_construct(A& a, T* p, U&& u, V&&... v) | |
88 | { | |
20effc67 | 89 | boost::allocator_construct(a, p, std::forward<U>(u), |
92f5a8d4 TL |
90 | std::forward<V>(v)...); |
91 | } | |
92 | #else | |
93 | template<class A, class T, class U> | |
94 | inline void | |
95 | alloc_construct(A& a, T* p, U&& u) | |
96 | { | |
20effc67 | 97 | boost::allocator_construct(a, p, std::forward<U>(u)); |
92f5a8d4 TL |
98 | } |
99 | #endif | |
100 | #else | |
101 | template<class A, class T, class U> | |
102 | inline void | |
103 | alloc_construct(A& a, T* p, const U& u) | |
104 | { | |
20effc67 | 105 | boost::allocator_construct(a, p, u); |
92f5a8d4 TL |
106 | } |
107 | ||
108 | template<class A, class T, class U> | |
109 | inline void | |
110 | alloc_construct(A& a, T* p, U& u) | |
111 | { | |
20effc67 | 112 | boost::allocator_construct(a, p, u); |
92f5a8d4 TL |
113 | } |
114 | #endif | |
115 | ||
116 | template<class A, class T> | |
117 | inline void | |
118 | alloc_construct_n(A& a, T* p, std::size_t n) | |
119 | { | |
120 | detail::alloc_destroyer<A, T> hold(a, p); | |
121 | for (std::size_t& i = hold.size(); i < n; ++i) { | |
20effc67 | 122 | boost::allocator_construct(a, p + i); |
92f5a8d4 TL |
123 | } |
124 | hold.size() = 0; | |
125 | } | |
126 | ||
127 | template<class A, class T> | |
128 | inline void | |
129 | alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m) | |
130 | { | |
131 | detail::alloc_destroyer<A, T> hold(a, p); | |
132 | for (std::size_t& i = hold.size(); i < n; ++i) { | |
20effc67 | 133 | boost::allocator_construct(a, p + i, l[i % m]); |
92f5a8d4 TL |
134 | } |
135 | hold.size() = 0; | |
136 | } | |
137 | ||
138 | template<class A, class T, class I> | |
139 | inline void | |
140 | alloc_construct_n(A& a, T* p, std::size_t n, I b) | |
141 | { | |
142 | detail::alloc_destroyer<A, T> hold(a, p); | |
143 | for (std::size_t& i = hold.size(); i < n; void(++i), void(++b)) { | |
20effc67 | 144 | boost::allocator_construct(a, p + i, *b); |
92f5a8d4 TL |
145 | } |
146 | hold.size() = 0; | |
147 | } | |
92f5a8d4 TL |
148 | |
149 | template<class A, class T> | |
150 | inline void | |
151 | alloc_construct(noinit_adaptor<A>&, T* p) | |
152 | { | |
153 | ::new(static_cast<void*>(p)) T; | |
154 | } | |
155 | ||
92f5a8d4 TL |
156 | template<class A, class T> |
157 | inline void | |
158 | alloc_construct_n(noinit_adaptor<A>& a, T* p, std::size_t n) | |
159 | { | |
160 | detail::alloc_destroyer<noinit_adaptor<A>, T> hold(a, p); | |
161 | for (std::size_t& i = hold.size(); i < n; ++i) { | |
162 | ::new(static_cast<void*>(p + i)) T; | |
163 | } | |
164 | hold.size() = 0; | |
165 | } | |
166 | ||
92f5a8d4 TL |
167 | } /* boost */ |
168 | ||
169 | #endif |